The first Einstein zig-zag seen by humanity could help scientists ... but the fact that this one has two different lenses makes the lensing model a lot better constrained, and the uncertainty ...

You can spot the zig-zag letters from their zig-zag lines. Let's look at the ‘V’ here. That down up movement makes the zig-zag. ‘W’ is the same, only with more diagonals. Down, up ...

In what is the first discovery of an Einstein zig-zag lens in the universe ... The astronomers then created a computer model to confirm that the observation was indeed a compound lens.